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(No Model.)

S. M. GUSS.

SHEAR BLADE FOR HOT BLOOMS, BARS, 650.

No. 325,673. Patented Sept. 8, 1885.

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UNITED STATES PATENT Fries.

SAMUEL M. GUSS OF READING, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO JACOB S. AMMON, OF SAME PLACE.

SHEAR-BLADE FOR HOT BLOOMS, BARS; 81.0.

SPECIFICATION forming part of Letters Patent No. 325,673, dated september 8, 1885.

Application filed June 20, 1885. (No model.)

To all whom it may concern:

Be it known that I, SAMUEL M. GUss, a citizen of the United States, residing at the city of Reading,county of Berks, State of Pennsylvania, have invented a new and useful Improvement in Shear-Blades for Hot Blooms, Bars, &c., of which the following is a specification.

This invention is related more particularly to shears used in rolling-mills.

The object of the improvement is to adapt the blades of the shear, both fixed and movable ones, to shear bars, blooms, or plates while in a hot or heated condition without injurious softening of the blades, the practical use of the improvement having demonstrated that the cutting life of the shearblades constructed in accordance with my invention is equal to from four to six times the life of an ordinary shearblade employed upon the same class of bars, plates, and bloomsimmediately after they have left the rolls.

The accompanying drawings will show clearly to an expert the nature of my invention, like letters of reference indicating like parts.

Figure 1 represents a portion of ashear with my improvement attached to the same; Fig. 2, a front elevation, partly in section, of the ordinary shear-blade adapted to use my im provement; Fig. 3, a detached shear-blade as cast of steel or cast-iron (chilled) with my improvcn'ient partly in section; Fig. 4, a section. through the blade on the line a a of Fig. 2.

Since the introduction of steel-mills it has become quite general to cut the ingots, blooms, bars, Soc, while hot, therebysaving one handling of the product, and iron-mills have also undertaken to do the same. Although a saving is effected thereby, it is also a source of annoyance, from the fact that frequently the blades of the shears will give out before the being (except in case of breakage) made between the turns.

I have shown the improved blades attached to an alligator-shear, and an expert will readily see that it is equally applicable, and, in 5 fact, more readily applied, to the modern millshear.

A represents the bed; A, the fulcrum; B, the movable jaw; G O, the blades.

1) is a chamber drilled in the ordinary shear- 6c blade near the cutting-edge when remodeling the same to adapt them to my improvement, and which I make usually three-quarters of an inch or more in diameter.

E represents a thread, and F a thimble screwed therein.

G is the supply-pipe, usually about threesixteenths of an inch in diameter. This pipe passes through the T-piece H, being threaded and screwed in the outer end of the same, 7c and is projected beyond the face to receive a union, I, by which a removable connection is made with the supply-pipe J. The thimbleF provides an annular passage around the pipe G, the latter being projected within the chamber D to about one-fourth of an inch of the rear of the same. The T-piece H forms an extension of the circulating-chamber, the discharge from which is regulated by the cock K. Changes of blades are made by breaking 8c the connection at the union I.

I prefer to construct the blades as shown in Fig. 3, with the chamber H integral with the blade and chamber D, by which construction less machine-labor is required in their preparation and loose pieces are dispensed with.

The blades may be made of cast-iron with the cutting-faces cast upon chills, and will wear a long time and make a satisfactory out; but I prefer to cast them directly of steel and 9c temper them for the purpose desired.

In operation the pipe J is connected with a reservoir of water, of sutiicient height above the shear to insure the passage of water through the tubeG into the chamber D, with- 9 in which it passes, and leaves the same by the annular space around the pipe G. The speed of the current passing through the chamber is regulated by the cock K, and the escaping water may be discharged upon and in a line with the cutting-edge of the blade. A flexible hose, J, or its equivalent; may be used-for Q the supply of the movable blade. I It will be found in a practical use of myimprovement that the blades are not heated enough to draw their temper, although constantly employed cutting red-hot blooms, bars, &c., and require less power to operate, owing 1 to their retention of a cutting-edge from the circulation of the water within the same.

Having described the construction, use, and operation of my improved shear-blades and recited their advantages over the ordinary blades, I desire to secure by Letters Patent the following claims thereon:

1.- As an improvement in the construction of shears for shearing heated metal bars,r&c.,

a hollow or chambered cutting-blade, jointly with a tube for conveying water to and through the same, and having an orifice closed'by a 20 bered shear-blade having a circulating-pipe 25 forming a part of the same, as described, of a reservoir or pressure-head of water by pipe J and unionI, the supply of water to and the circulation of the same within said chambered blade being controlled by the cock K, sub 0 stantially as and for the purpose set forth.

SAML. M. GUSS.

\Vitnesses:

JAMES R. KENNEY, H. P. KEISER. 

